Friday, October 2, 2009
Fri-Day 2
Bio 3/6- we finished our description of the structure and function of nucleic acids, DNA and RNA. We saw that nucleic acids are chains of nucleotides that are bound together (with the help of nucle-ases) forming a double-helix of two complementary chains (DNA) or a single-helix (RNA).
The sugar-phosphate "rungs" of the DNA or RNA ladder do not vary at all but the NITROGENOUS BASE sequence enables nucleic acid molecules to code information that directs the making of the specific proteins that characterize a given organism.
We then started our test review.
On Monday, we will review and complete our unit labs (though I will postpone the Alamain discussion until after our test).
AP Chem- see Blackboard for more solved solution stoichiometry problems as well as the FIVE homework questions, Chapter 4 in your text, questions 76, 88, 92, 94, 96 that will be collected next Tuesday in class. Show ALL work including units and their cancellation, substances, phases, attention to sig figs in the FINAL answer, drawings, balancing steps, etc.
We did two more solution stoichiometry problems: one in which we determined the empirical formula of an acid by titrating it with a known base and the other in which we dissolved and analyzed the mass percent of iron in an iron ore via redox titration.
The sugar-phosphate "rungs" of the DNA or RNA ladder do not vary at all but the NITROGENOUS BASE sequence enables nucleic acid molecules to code information that directs the making of the specific proteins that characterize a given organism.
We then started our test review.
On Monday, we will review and complete our unit labs (though I will postpone the Alamain discussion until after our test).
AP Chem- see Blackboard for more solved solution stoichiometry problems as well as the FIVE homework questions, Chapter 4 in your text, questions 76, 88, 92, 94, 96 that will be collected next Tuesday in class. Show ALL work including units and their cancellation, substances, phases, attention to sig figs in the FINAL answer, drawings, balancing steps, etc.
We did two more solution stoichiometry problems: one in which we determined the empirical formula of an acid by titrating it with a known base and the other in which we dissolved and analyzed the mass percent of iron in an iron ore via redox titration.
# posted by C @ 11:00 AM 
